Liquid detergent composition for textile products

Abstract

To provide a liquid detergent composition for textile products that exhibits excellent cleaning power even against stubborn stains on food and beverage products. [Solution] A liquid detergent composition for textile products comprising: (A) component: surfactant; (B) component: polymer having at least one repeating unit (b1) selected from the group consisting of alkylene terephthalate units and alkylene isophthalate units, and an oxyalkylene unit (b2); (C) component: one or more chelating agents selected from hydroxyiminodisuccinic acid, ethylenediamine disuccinic acid, 1,3-propanediaminetetraacetic acid, hydroxyethylethylenediaminetriacetic acid, 1,3-diamino-2-hydroxypropanetetraacetic acid, triethylenetetraaminehexaacetic acid, diethylenetriaminepentaacetic acid, and salts thereof; and (D) component: water, wherein component (A) contains (A1) component: nonionic surfactant in an amount of 5% by mass or more relative to the total mass of the liquid detergent composition for textile products.

Description

[Technical Field]

[0001] This invention relates to a liquid detergent composition for textile products. [Background technology]

[0002] Various detergent compositions containing surfactants have been proposed for cleaning textile products such as clothing (Patent Documents 1 and 2). Examples of stubborn stains that adhere to clothing include food and beverage stains such as curry and sauces. These cannot be easily removed by washing with general laundry detergents. One example of a strategy to enhance cleaning power is the inclusion of enzymes such as proteases and amylases in addition to surfactants. However, simply adding enzymes does not guarantee complete removal of dirt. Furthermore, enzymes have the problem of decreasing activity over time in the cleaning agent composition, leading to a decrease in cleaning power. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] International Publication No. 2019 / 124486 [Patent Document 2] Special Publication No. 2015-533860 [Overview of the project] [Problems that the invention aims to solve]

[0004] Therefore, the object of the present invention is to provide a liquid detergent composition for textile products that exhibits excellent cleaning power even against stubborn stains on food and beverages. [Means for solving the problem]

[0005] The present inventors have the following embodiments. <1> (A) Ingredients: Surfactants and (B) Component: A polymer having at least one repeating unit (b1) selected from the group consisting of alkylene terephthalate units and alkylene isophthalate units, and an oxyalkylene unit (b2), (C) Components: Hydroxyiminodisuccinic acid, ethylenediaminedisuccinic acid, 1,3-propanediaminetetraacetic acid, hydroxyethylethylenediaminetriacetic acid, 1,3-diamino-2-hydroxypropanetetraacetic acid, triethylenetetraaminehexaacetic acid, diethylenetriaminepentaacetic acid, and one or more chelating agents selected from salts thereof, (D) Ingredients: Water and A liquid detergent composition for textile products containing, The aforementioned component (A) includes component (A1): nonionic surfactant, The content of component (A1) is 5% by mass or more relative to the total mass of the liquid detergent composition for textile products. Liquid detergent composition for textile products. <2> The mass ratio of the content of component (B) to the content of component (C) [(B) / (C) ratio] is 0.1 to 100. <1> A liquid detergent composition for textile products as described above. [Effects of the Invention]

[0006] The liquid detergent composition for textile products of the present invention exhibits excellent cleaning power even against stubborn stains on food and beverage products. [Modes for carrying out the invention]

[0007] (Liquid detergent composition for textile products) The liquid detergent composition for textile products of the present invention (hereinafter sometimes simply referred to as "detergent composition") is a liquid composition containing components (A) to (D). In this specification and in the claims, the "~" indicating a numerical range means that the numbers before and after it are included as the lower and upper limits, respectively.

[0008] The content of component (C) described below refers to its content in the form of salt. The content of component (A2) and soap described below is the content in the form of acid. That is, for component (A2) and soap when they form a salt, the content is calculated on an acid-converted basis based on the molecular weight when the cations are replaced with protons. Furthermore, the content of the components used as a solution or dispersion is calculated on a pure content basis, excluding the solvent.

[0009] <(A) component> Component (A) is a surfactant, and includes component (A1): a nonionic surfactant. Preferably, component (A) includes component (A2): a non-soap anionic surfactant in addition to component (A1). Component (A) may also include component (A3): other surfactants other than components (A1) and (A2) (excluding soap), to the extent that it does not impair the effects of the present invention.

[0010] [(A1) component] (A1) Component is a nonionic surfactant. (A1) Examples of components include polyoxyalkylene-type nonionic surfactants, alkylphenols, alkylene oxide adducts of fatty acids having 8 to 22 carbon atoms or amines having 8 to 22 carbon atoms, polyoxyethylene polyoxypropylene block copolymers, fatty acid alkanolamines, fatty acid alkanolamides, polyhydric alcohol fatty acid esters or their alkylene oxide adducts, polyhydric alcohol fatty acid ethers, alkyl (or alkenyl)amine oxides, alkylene oxide adducts of hydrogenated castor oil, sugar fatty acid esters, N-alkyl polyhydroxy fatty acid amides, alkyl glycosides, and the like.

[0011] (A1) A polyoxyalkylene type nonionic surfactant is preferred as component (A1). As polyoxyalkylene-type nonionic surfactants, compounds represented by the following general formula (a1-1) (hereinafter also referred to as "compound (a11)") and compounds represented by the following general formula (a1-2) (hereinafter also referred to as "compound (a12)") are more preferred, with compound (a11) being even more preferred.

[0012] R 1 -O-[(EO) s1 / (A 1 O) t1 -(EO) u1 -R 2 ···(a1-1) (In general formula (a1-1), R 1 is a hydrocarbon group having 8 to 22 carbon atoms, R 2 is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or an alkenyl group having 2 to 6 carbon atoms, EO is an oxyethylene group, s1 is a number from 3 to 25 indicating the average number of repetitions of EO, A 1 O represents at least one of PO (oxypropylene group) and BO (oxybutylene group), t1 is a number from 0 to 6 indicating the average number of repetitions of A 1 O, and u1 is a number from 0 to 20 representing the average number of repetitions of EO.)

[0013] R 1 The number of carbon atoms in the hydrocarbon group is 8 to 22, preferably 10 to 18, and particularly preferably 12 to 18. R 1 may be linear or branched. R 1 may be a linear hydrocarbon group or a group selected from branched primary hydrocarbon groups and linear secondary hydrocarbon groups. In particular, R 1 is preferably a linear hydrocarbon group. R 1 The hydrocarbon group may or may not have an unsaturated bond. The carbon atom of R 1 bonded to -O- may be a primary carbon atom or a secondary carbon atom.

[0014] R 2 When R is an alkyl group, the number of carbon atoms is 1 to 6, and preferably 1 to 3. R 2 When R is an alkenyl group, the number of carbon atoms is 2 to 6, and preferably 2 to 3. R 2 is preferably a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and more preferably a hydrogen atom.

[0015] s1 is 3 to 25, and when the detergent composition contains an enzyme, s1 is preferably 5 to 25, more preferably 7 to 20, even more preferably 7 to 18, and particularly preferably 7 to 15, in terms of excellent enzyme stability. Furthermore, s1 is preferably 7 to 18, and particularly preferably 7 to 15, in terms of improved cleaning power against food and beverage stains, especially stubborn stains such as curry and sauce (hereinafter also referred to as "food stains"). It is believed that the shorter the oxyethylene group, i.e., the more hydrophobic it is, the more easily it acts on lipophilic components in the stain, and the higher the cleaning power it can exhibit.

[0016] t1 is between 0 and 6, and preferably between 0 and 3. u1 is between 0 and 20, preferably between 0 and 15, and more preferably between 0 and 10.

[0017] R 1 When the group is a linear hydrocarbon group, s1+u1 is preferably 3 to 30, more preferably 5 to 25, even more preferably 5 to 20, particularly preferably 7 to 18, and most preferably 12 to 15. t1 is preferably a number from 0 to 6, more preferably 0 to 3. R 1 When the hydrocarbon group is branched, s1+u1 is preferably 1 to 20, more preferably 3 to 14, more preferably 4 to 12, and most preferably 5 to 10. t1 is preferably 0 to 6, and more preferably 0 to 3.

[0018] If t1 is not 0, i.e., compound (a1) has EO and PO, EO and BO, or EO, ​​PO and BO, then [(EO) s1 / ( A 1 O) t1 In [ ], there are no particular restrictions on the distribution (arrangement order) of EO and PO, EO and BO, or EO, ​​PO and BO; they may be arranged in blocks or randomly. Also, if EO is "R 1 -O-" may be added, or PO or BO may be added to "R 1 It may be combined with "-O-". If t1 is not 0, compound (a1) preferably has EO and PO, or EO and BO. The average repeat count can be measured by gas chromatography, NMR, etc.

[0019] R 1 If it is a branched hydrocarbon group, R 1 A hydrocarbon group represented by the following general formula (α) is preferred. Of the compounds (a11), R 1 A compound in which the hydrocarbon group is represented by the following general formula (α) is also specifically called "compound (a11-α)". R 5 -CHR 6 -CH2- ···(α) (In general formula (α), R 5 and R 6 Each of these is independently a chain-like monovalent hydrocarbon group, and R 5 and R 6 The total number of carbon atoms is between 6 and 16.

[0020] R 5 and R 6 Each of these is an independent, chain-like monovalent hydrocarbon group. 5 and R 6 The total number of carbon atoms is 6 to 16, preferably 6 to 14, more preferably 6 to 14, and even more preferably 6 to 10. R 5 and R 6 The monovalent hydrocarbon group in the chain may be linear or branched. The monovalent hydrocarbon group may or may not have an unsaturated bond. The monovalent hydrocarbon group is preferably an alkyl group or an alkenyl group. R 5 The number of carbon atoms and R 6 If the number of carbon atoms is different, R 5 and R 6 The carbon atom with the fewer carbon atoms is preferably 2 to 7, and the carbon atom with the more carbon atoms is preferably 4 to 14.

[0021] R 5 -CHR 6 -CH2- is Garbet alcohol (R 5 -CHR 6This is a residue obtained by removing one hydroxyl group from -CH2-OH). Note that R 5 -CHR 6 -CH2- is R 5 -CH(R 6 Also written as -CH2-. Guerbet alcohols are alcohols obtained by subjecting a starting alcohol to the Guerbet reaction. In the Guerbet reaction, two molecules of the starting alcohol condense to form a dimer. For example, if R is used as the starting alcohol... 7 -CH2-CH2-OH (where R 7 It is a chain-like monovalent hydrocarbon group having 2 to 7 carbon atoms.) Using this, R 7 -CH2-CH2-CHR 7 A Garbet alcohol represented by -CH2-OH is obtained. The two starting alcohol molecules that form the Garbet alcohol may be different. If the two starting alcohol molecules are the same, R 5 The number of carbon atoms and R 6 The difference in the number of carbon atoms is 2. R 5 -CHR 6 Examples of the -CH2- group include the 2-ethylhexyl group and the 2-propylheptyl group.

[0022] Specific examples of compound (a11-α) include 2-ethylhexyl alcohol alcohols, such as 2-ethylhexyl alcohol ethoxylate, and 2-propylheptyl alcohol alkoxylates, such as 2-propylheptyl alcohol ethoxylate. Among these, 2-propylheptyl alcohol ethoxylate is preferred. The average number of moles of ethylene oxide added is preferably 3 to 14, more preferably 4 to 12, and most preferably 5 to 10.

[0023] Compound (a11-α) may be a commercially available product or one produced by a known manufacturing method. For example, commercially available 2-ethylhexyl alcohol ethoxylate products include "Newcol® 1008" manufactured by Nippon Emulsifier Co., Ltd. Commercially available 2-propylheptyl alcohol ethoxylate products include "Lutensol® XP-100," "Lutensol XP-80," and "Lutensol XP-50" manufactured by BASF.

[0024] One method for producing compound (a11-α) is to add 1 to 20 moles of alkylene oxide to a Garbet alcohol having 8 to 18 carbon atoms. The Garbet alcohol may be one produced by subjecting the aforementioned starting alcohols to the Garbet reaction, or a commercially available product may be used. For example, 2-propylheptyl alcohol can be obtained by subjecting pentanol to the Garbet reaction.

[0025] R 3 -X-[(EO) s2 / ( A 2 O) t2 ]-(EO) u2 -R 4 ...(a1-2) (In general formula (a1-2), R 3 is a hydrocarbon group having 7 to 21 carbon atoms, -X- is -COO- or -CONH-, and R 4 A is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms, EO is an oxyethylene group, s2 is a number from 3 to 25 indicating the average number of repeats of EO, and A 2 O represents at least one of PO (oxypropylene group) and BO (oxybutylene group), and t2 is A 2 u2 is a number between 0 and 6 representing the average number of repetitions in O, and u2 is a number between 0 and 20 representing the average number of repetitions in EO.

[0026] R 3 The number of carbon atoms in the hydrocarbon group is 7 to 21, preferably 9 to 19, and more preferably 11 to 17. 3 It may be linear or branched. Specifically, R 3R may be a linear hydrocarbon group, or a group selected from branched primary hydrocarbon groups and linear secondary hydrocarbon groups. In particular, R 3 It is preferable that it be a linear hydrocarbon group. R 3 The hydrocarbon group may or may not have an unsaturated bond. -X-bond R 3 The carbon atoms can be either primary or secondary carbon atoms.

[0027] R 4 If it is an alkyl group, the number of carbon atoms is 1 to 6, and preferably 1 to 3. R 4 If the group is an alkenyl group, the number of carbon atoms is 2 to 6, and preferably 2 to 3. R 4 Preferably, the alkyl group consists of a hydrogen atom and an alkyl group having 1 to 3 carbon atoms, and more preferably an alkyl group having 1 to 2 carbon atoms. -COO- is preferred as -X-.

[0028] S2 is 3 to 25, with 5 to 20 being preferred, 10 to 18 more preferred, and 12 to 18 even more preferred, in terms of excellent enzyme stability. t2 is between 0 and 6, and preferably between 0 and 3. u2 is between 0 and 20, preferably between 0 and 15, and more preferably between 0 and 10. s2+u2 is preferably 5 to 30, more preferably 5 to 25, even more preferably 5 to 20, and particularly preferably 10 to 20.

[0029] If t2 is not 0, i.e., compound (a2) has EO and PO, EO and BO, or EO, ​​PO and BO, then [(EO) s2 / ( A 2 O) t2 In [ ], there are no particular restrictions on the distribution (arrangement order) of EO and PO, EO and BO, or EO, ​​PO and BO; they may be arranged in blocks or randomly. Also, if EO is "R 3 -X-" may be added, or PO or BO may be "R 3It may be combined with "-X-". If t2 is not 0, compound (a2) preferably has EO and PO, or EO and BO.

[0030] As compound (a12), polyoxyethylene fatty acid alkyl esters are preferred, and in particular, R in formula (a2) 3 The alkyl group is a C11 alkyl group and a C13 alkyl group, and -X- is -COO-, R 4 A compound (hereinafter sometimes referred to as MEE) in which the group is a methyl group, s2=15, t2=0, and u2=0 is more preferred.

[0031] The (A1) component described above may be a single component or a combination of two or more components.

[0032] The content of component (A1) is 5% by mass or more relative to the total mass of the detergent composition, preferably 5 to 60% by mass, more preferably 20 to 50% by mass, and even more preferably 28 to 40% by mass. When the content of component (A1) is above the lower limit, the cleaning power against food stains and sebum stains is improved. When the content of component (A1) is below the preferred upper limit, a stable uniformity of appearance is obtained, the viscosity suitable for use is achieved, and the rinsability is improved.

[0033] [(A2) component] (A2) The component is a non-soap-based anionic surfactant. A "non-soap-based anionic surfactant" is an anionic surfactant excluding higher fatty acids and their salts (so-called soaps). "Higher fatty acids" are saturated fatty acids with 8 to 24 carbon atoms and unsaturated fatty acids with 8 to 24 carbon atoms. In other words, component (A2) is an anionic surfactant excluding saturated fatty acids with 8 to 24 carbon atoms, unsaturated fatty acids with 8 to 24 carbon atoms, and their salts.

[0034] (A2) Examples of components include carboxylic acid-type anionic surfactants such as linear alkylbenzene sulfonic acid or its salt (LAS), α-olefin sulfonic acid or its salt (AOS), linear or branched alkyl sulfate ester or its salt (AS), polyoxyalkylene alkyl ether sulfate ester or its salt (AES), polyoxyalkylene alkenyl ether sulfate ester or its salt, alkyl group-containing alkane sulfonic acid or its salt, α-sulfo fatty acid ester or its salt, internal olefin sulfonic acid or its salt (IOS), hydroxyalkane sulfonic acid or its salt (HAS), alkyl ether carboxylic acid or its salt, polyoxyalkylene ether carboxylic acid or its salt, alkylamide ether carboxylic acid or its salt, alkenylamide ether carboxylic acid or its salt, acylaminocarboxylic acid or its salt; and phosphate ester-type anionic surfactants such as alkyl phosphate ester or its salt, polyoxyalkylene alkyl phosphate ester or its salt, polyoxyalkylene alkylphenyl phosphate ester or its salt, glycerin fatty acid ester monophosphate ester or its salt.

[0035] Examples of salt forms of non-soap-based anionic surfactants include alkali metal salts (sodium salts, potassium salts, etc.), alkaline earth metal salts (magnesium salts, etc.), and alkanolamine salts (monoethanolamine salts, diethanolamine salts, etc.). (A2) Component (A2) may be used alone or in combination of two or more components.

[0036] (A2) Component is preferably LAS, AOS, AS, or AES. From the viewpoint of further enhancing cleaning power, LAS and AES are more preferred as component (A2). The cleaning agent composition preferably contains at least LAS, and more preferably contains both LAS and AES.

[0037] The number of carbon atoms in the alkyl chain of LAS (also called "component (a21)") is preferably 8 to 18, more preferably 8 to 16, and even more preferably 10 to 14. When the number of carbon atoms is within the above range, the cleaning power can be further enhanced. As the component (a21), linear alkylbenzene sulfonic acid (LAS-H), sodium linear alkylbenzene sulfonate (LAS-Na), and potassium linear alkylbenzene sulfonate (LAS-K) are preferable.

[0038] Examples of AES include compounds represented by the following general formula (a2-2) (also referred to as the "component (a22)"). R 9 -O-[(EO) v / (PO) w -SO3M ···(a2-2) (In the general formula (a2-2), R 9 is an alkyl group having 8 to 20 carbon atoms or an alkenyl group having 8 to 20 carbon atoms, EO is an oxyethylene group, PO is an oxypropylene group, v is a number of 0 or more representing the average repetition number of EO, w is a number of 0 to 6 representing the average repetition number of PO, and M is a counter ion.)

[0039] R 9 may be linear or branched. R 9 is preferably a linear or branched alkyl group having 10 to 20 carbon atoms, more preferably a linear or branched alkyl group having 12 to 14 carbon atoms. The ratio (content) of the compound where v = 0 and w = 0 in the formula (a2-2) is preferably 35 to 55% by mass based on the total mass of AES. v is preferably 0 to 5, more preferably 0.1 to 3, still more preferably 0.5 to 3, and particularly preferably 0.5 to 2.5. w is preferably 0 to 3, more preferably 0. v + w is preferably a number greater than 0, more preferably 1 to 5. If v and w are not both 0, that is, if component (b2) contains both EO and PO, then EO and PO may be added in a block-like manner or randomly. Methods for adding EO and PO in a block-like manner include introducing ethylene oxide followed by propylene oxide, or introducing propylene oxide followed by ethylene oxide. The distribution of the number of added moles of ethylene oxide and propylene oxide is not particularly limited. Examples of M include hydrogen atoms; alkali metal ions such as sodium and potassium; alkaline earth metal ions such as magnesium; and alkanolamines such as monoethanolamine and diethanolamine. If M is a counterion with a valency of 2 or higher, it is assumed that M is bonded to -SO3 in numbers equal to 1 multiplied by its valency. For example, if M is a magnesium ion, the number of M is 1 / 2.

[0040] (A2) The content of component (A2) is preferably 2 to 30% by mass, more preferably 4 to 25% by mass, and even more preferably 10 to 20% by mass, relative to the total mass of the detergent composition. When the content of component (A2) is above the lower limit, the cleaning power against food stains and sebum stains is improved. When the content of component (A2) is below the upper limit, a stable uniformity of appearance is obtained, the viscosity suitable for use is achieved, and the rinsability is improved.

[0041] The sum of the content of component (A1) and component (A2) (hereinafter also referred to as "A1+A2 amount") is 5% by mass or more of the total mass of the detergent composition, preferably 5-60% by mass, more preferably 10-60% by mass, even more preferably 28-50% by mass, and particularly preferably 35-60% by mass. If the A1+A2 amount is above the lower limit, the cleaning power against food stains and sebum stains will be improved. If the A1+A2 amount is below the upper limit, the stability when stored at low temperatures (e.g., below -5°C) (hereinafter also referred to as "low temperature stability") can be improved.

[0042] The mass ratio of the content of component (A1) to the content of component (A2), expressed as component (A1) / component (A1) (hereinafter also referred to as the "(A1) / (A2) ratio"), is preferably 2 or more, and more preferably 2 to 5. When the (A1) / (A2) ratio is above the lower limit, the cleaning power against sebum stains is improved. When the A / B ratio is below the upper limit, the low-temperature stability of the detergent composition is improved.

[0043] [(A3) component] (A3) Components: Other surfactants other than components (A1) and (A2) (excluding soap) include cationic surfactants, amphoteric surfactants, semipolar surfactants, etc.

[0044] Examples of cationic surfactants include quaternary ammonium salts. Examples of quaternary ammonium salts include alkali metal salts (sodium salts, potassium salts, etc.), alkaline earth metal salts (magnesium salts, etc.), and alkanolamine salts (monoethanolamine salts, diethanolamine salts, etc.).

[0045] Examples of amphoteric surfactants include alkylbetaine type, alkylamidebetaine type, imidazoline type, alkylaminosulfone type, alkylaminocarboxylic acid type, alkylamidecarboxylic acid type, amide amino acid type, and phosphate type amphoteric surfactants. Examples of semi-polar surfactants include alkylamine oxides and alkylamidopropyldimethylamine oxides. These (A3) components may be a single type or a combination of two or more types.

[0046] The content of component (A) (total content of components (A1), (A2), and (A3), excluding soap) is 5% by mass or more of the total mass of the detergent composition, preferably 5 to 60% by mass, more preferably 10 to 60% by mass, even more preferably 28 to 50% by mass, and particularly preferably 35 to 60% by mass. When the content of component (A) is above the lower limit, the cleaning power against food stains and sebum stains is improved. When the content of component (A) is below the preferred upper limit, a stable uniformity of appearance is obtained, the viscosity suitable for use is achieved, and the rinsability is improved.

[0047] <(B) component> Component (B) is a polymer having at least one repeating unit (b1) selected from the group consisting of alkylene terephthalate units and alkylene isophthalate units, and an oxyalkylene unit (b2). In this specification, "repeating unit" refers to the monomer unit that constitutes the polymer.

[0048] Regarding a specific repeating unit (b1) Among the specific repeating units (b1), the alkylene terephthalate unit (hereinafter this repeating unit will also be called "repeating unit (b11)") is the repeating unit represented by the following general formula (b1-1).

[0049] [ka]

[0050] In the above formula (b1-1), R 21 R is a lower alkylene group. 21 The number of carbon atoms in the lower alkylene group is preferably 5 or less, more preferably 4 or less, and even more preferably 2 to 4. Specific examples of the repeating unit (b11) include ethylene terephthalate unit, propylene terephthalate unit, n-butylene terephthalate unit, isobutylene terephthalate unit, sec-butylene terephthalate unit, tert-butylene terephthalate unit, etc. Among them, the propylene terephthalate unit is preferred.

[0051] Among the specific repeating units (b1), examples of the alkylene isophthalate unit (hereinafter this repeating unit is also referred to as "repeating unit (b12)") include repeating units represented by the following general formula (b1-2).

[0052]

Chemical formula

[0053] In the formula (b1-2), R 22 is a lower alkylene group. The number of carbon atoms of the lower alkylene group in R 22 is preferably 5 or less, more preferably 4 or less, and even more preferably 2 to 4. Specific examples of the repeating unit (b12) include ethylene isophthalate unit, propylene isophthalate unit, n-butylene isophthalate unit, sec-butylene isophthalate unit, tert-butylene isophthalate unit, etc. Among them, the propylene isophthalate unit is preferred.

[0054] The repeating unit (b1) may be used alone or in combination of two or more. That is, the component (B) may have only the repeating unit (b11) as the repeating unit (b1) in one molecule, may have only the repeating unit (b12), or may have both the repeating unit (b11) and the repeating unit (b12). Also, two or more kinds of the repeating unit (b11) and / or two or more kinds of the repeating unit (b12) may be present.

[0055] In component (B), the number of repeating units (b1) in one molecule is preferably 1 to 10, more preferably 1 to 6, and even more preferably 2 to 4. If the number of repetitions of the repeating unit (b1) is greater than or equal to the preferred lower limit, the cleaning power against oil stains is further improved, while if it is less than or equal to the preferred upper limit, the liquid stability as a liquid detergent is further improved.

[0056] • About oxyalkylene units (b2) Examples of oxyalkylene units (hereinafter, this repeating unit will also be called the "repeating unit (b2)") include the repeating unit represented by the following general formula (b2-1).

[0057] [ka]

[0058] In the formula (b2-1), R 23 R is a lower alkylene group. 23 The number of carbon atoms in the lower alkylene group is preferably 4 or less, more preferably 2 to 4, even more preferably 2 or 3, and particularly preferably 2. Examples of repeating units (b2) include oxyethylene units, oxypropylene units, and oxybutylene units. Among these, oxyethylene units and oxypropylene units are preferred, and oxyethylene units are more preferred.

[0059] The repeating unit (b2) may be used alone or in combination of two or more types. That is, component (B) may have only oxyethylene units as repeating units (b2) in one molecule, for example, only oxypropylene units, or both oxyethylene units and oxypropylene units. Among these, having only oxyethylene units is preferred.

[0060] In component (B), the number of repeating units (b2) in one molecule is 1 or more, preferably 5 to 150, and more preferably 10 to 100. If the number of repetitions of the repeating unit (b2) is greater than or equal to the preferred lower limit, the liquid stability as a liquid detergent is further improved, while if it is less than or equal to the preferred upper limit, the cleaning power against oil stains is further improved.

[0061] Furthermore, component (B) may have only an oxyalkylene group (when the number of repeats is 1) as a repeating unit (b2) in one molecule, or it may have only a polyoxyalkylene unit (when the number of repeats is 2 or more), or it may have both an oxyalkylene group and a polyoxyalkylene unit.

[0062] Component (B) is preferably a polymer in which repeating units (b1) and repeating units (b2) are polymerized in a block-like or random manner, and more preferably a polymer polymerized in a block-like manner.

[0063] Component (B) may have other repeating units in addition to repeating units (b1) and (b2). Examples of other repeating units include repeating units derived from polymerization initiators and polymerization inhibitors, and repeating units derived from monomers copolymerizable with monomers that provide repeating units (b1) or repeating units (b2). If component (B) contains other repeating units, the sum of repeating units (b1) and (b2) is preferably 80 mol% or more, and more preferably 90 mol% or more, of the total sum of all repeating units constituting component (B). When the sum of repeating units (b1) and (b2) is above the above preferred lower limit, the cleaning power against oil stains is increased. In addition, re-soiling of the object being washed becomes less likely.

[0064] Component (B) is preferably a water-soluble polymer, from the standpoint of its own solubility and the liquid stability of the liquid detergent. In this context, "water-soluble polymer" refers to a polymer that has been dissolved after being added to 1000g of water in a 1-liter beaker at 40°C and stirred for 12 hours (200 rpm) using a stirrer (8mm in diameter, 50mm in length).

[0065] The weight-average molecular weight of component (B) is preferably 10,000 or less, and more preferably 5,000 or less. The lower the weight-average molecular weight of component (B), the better the cleaning performance against food stains and the greater the uniform stability of the appearance. This is thought to be because lower molecular weights result in higher dispersion efficiency and a greater effect in removing stains from cloth. Furthermore, when the weight-average molecular weight of component (B) is below the preferred upper limit, it achieves a viscosity suitable for use.

[0066] Furthermore, since the solubility and dispersibility in water are improved, a preferred lower limit is 500 or more, more preferably 800 or more, and even more preferably 1000 or more. The "weight-average molecular weight" referred to here is the value obtained by measuring the molecular weight using GPC (gel permeation chromatography) with THF (tetrahydrofuran) as the solvent, and then converting it based on the calibration curve for PEG (polyethylene glycol).

[0067] (B) Component can be produced by synthesis methods disclosed in various literature, textbooks, and patents, for example, the method described in Journal of Polymer Science, Vol. 3, pp. 609-630 (1948); Journal of Polymer Science, Vol. 8, pp. 1-22 (1951); and Japanese Patent Publication No. 61-218699.

[0068] (B) Suitable specific examples of component (B) include polymers represented by the following general formula (B-p1), polymers represented by the general formula (B-p2), or mixtures thereof.

[0069] [ka]

[0070] In the above equations (B-p1) and (B-p2), R 20 and R 30 Each of these is independently a hydrogen atom or a methyl group, preferably each being a methyl group, and more preferably both being methyl groups. R 24 and R 27 Each of these is either a methyl group or a hydrogen atom, and it is preferable that each is a methyl group. R 25 , R 26 , R 28 and R 29 These are, independently, alkylene groups having 2 to 4 carbon atoms. f1 and f2 are each between 0 and 10, preferably between 0.5 and 5, and more preferably between 0.5 and 2.5. g1, g2, h1 and h2 are each independently between 1 and 100, preferably between 1 and 80, and more preferably between 1 and 50. When f1, f2, g1, g2, h1 and h2 are within the above ranges, the solubility in water is further improved, and the cleaning power against oil stains is further enhanced.

[0071] (B) Component may be used alone or in combination of two or more types. Examples of component (B) include commercially available products such as TexCare® SRN-170 (manufactured by Clariant GmbH, Germany, weight-average molecular weight 3000, aggregate containing the polymer represented by the above formula (B-p1)) and TexCare SRN-325 (manufactured by Clariant GmbH, Germany, weight-average molecular weight 7000, aggregate containing the polymer represented by the above formula (B-p1)). Among these, TexCare SRN-170 is preferred because it is easier to obtain a liquid cleaning agent with high efficiency in removing and dispersing dirt from fabric.

[0072] (B) The content of component (B) is preferably 0.2 to 3% by mass, and more preferably 1 to 3% by mass, relative to the total mass of the detergent composition. When the content of component (B) is above the lower limit, the cleaning power against food stains and the re-soiling prevention performance are improved. When the content of component (B) is below the preferred upper limit, a stable uniformity of appearance is obtained, and the viscosity is suitable for use.

[0073] <(C) component> (C) Component is one or more chelating agents selected from hydroxyiminodisuccinic acid (HIDS), ethylenediaminedisuccinic acid (EDDS), 1,3-propanediaminetetraacetic acid (PDTA), hydroxyethylethylenediaminetriacetic acid (HEDTA), 1,3-diamino-2-hydroxypropanetetraacetic acid (DPTA-OH), triethylenetetraaminehexaacetic acid (TTHA), diethylenetriaminepentaacetic acid, and salts thereof.

[0074] Examples of chelating agent salts include alkali metal salts (sodium salts, potassium salts, etc.), alkaline earth metal salts (magnesium salts, etc.), and alkanolamine salts (monoethanolamine salts, diethanolamine salts, etc.). Component (C) may be used alone or in combination of two or more types. (C) HIDS and EDDS are preferred as components that provide high cleaning power.

[0075] (C) The content of component (C) is preferably 0.01 to 5% by mass, more preferably 0.1 to 2% by mass, and even more preferably 0.3 to 1% by mass, based on the total mass of the detergent composition. If the content of component (C) is above the lower limit, the cleaning power against food stains and sebum stains is improved. If the content of component (C) is below the preferred upper limit, a stable uniformity of appearance can be obtained.

[0076] The mass ratio of the content of component (B) to the content of component (C) [(B) / (C) ratio] is preferably 0.1 to 100, more preferably 0.4 to 20, and even more preferably 1 to 10. If the (B) / (C) ratio is within the above preferred range, the cleaning power against food stains will improve. This is thought to be because, within the above preferred range, the dispersion efficiency is high and the effect of removing stains from the cloth is enhanced.

[0077] The mass ratio of the content of component (A) to the content of component (C) [(A) / (C) ratio] is preferably 1 to 1000, and more preferably 50 to 100. If the (A) / (C) ratio is within the above preferred range, the cleaning power against food stains will be improved.

[0078] The mass ratio of the content of component (A) to the content of component (B) [(A) / (B) ratio] is preferably 1 to 500, more preferably 10 to 250, and even more preferably 10 to 100. If the (A) / (B) ratio is within the above preferred range, the cleaning power against food stains will be improved.

[0079] <(D) component> (D) Component is water. (D) The component is not particularly limited and includes ion-exchanged water, distilled water, pure water, etc.

[0080] The content of component (D) is preferably 20% by mass or more, and more preferably 20 to 40% by mass, relative to the total mass of the detergent composition. If the content of component (D) is above the lower limit, the detergent composition disperses quickly in water. If the content of component (D) is below the upper limit, the surfactant content can be increased.

[0081] <Optional ingredients> The detergent composition may contain other components (optional components) other than the above-mentioned components (A) to (D), as long as they do not impair the effects of the present invention. Optional ingredients include higher fatty acids and their salts, water-miscible organic solvents, pH adjusters, antibacterial agents, enzymes, metal ion scavenging agents (excluding component (C)), preservatives, texture enhancers, color transfer inhibitors, re-soiling inhibitors, pearlescent agents, soil release agents (excluding component (B)), hydrotropes, colorants, emulsifiers, fluorescent agents, extracts, etc.

[0082] [Higher fatty acids and their salts] The higher fatty acids and their salts are one or more selected from higher fatty acids (fatty acids with 8 to 22 carbon atoms) and their salts (i.e., soap). The detergent composition can be made to have improved rinsability by containing higher fatty acids and their salts. The higher fatty acids may be saturated fatty acids, unsaturated fatty acids, or mixtures thereof. The carbon number of the higher fatty acid is preferably 10 to 20, and more preferably 12 to 18. Examples of higher fatty acids and their salts include single fatty acids or their salts, such as stearic acid, linoleic acid, oleic acid, and coconut fatty acid; and mixed fatty acids or their salts, such as coconut fatty acid and beef tallow fatty acid. These higher fatty acids and their salts may be used individually or in combination of two or more.

[0083] The content of higher fatty acids and their salts is preferably 0.3 to 3% by mass, and more preferably 0.5 to 2.5% by mass, relative to the total mass of the detergent composition. If the content of higher fatty acids and their salts is above the lower limit, the rinsing performance can be further improved. If the content of higher fatty acids and their salts is below the upper limit, the deterioration of the fragrance of the detergent composition can be effectively suppressed.

[0084] [Water-miscible organic solvent] Water-miscible organic solvents are organic solvents that dissolve in 1 liter of water at 25°C in amounts of 25 g or more. Examples of water-miscible organic solvents include alcohols such as ethanol, glycerin, 1-propanol, 2-propanol, 1-butanol, and 3-methoxy-3-methyl-1-butanol (Solfit®, manufactured by Kuraray Co., Ltd.); glycols such as propylene glycol (PG), butylene glycol, and hexylene glycol; polyglycols such as diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol with a molecular weight of approximately 200 to 1,000, and dipropylene glycol; and alkyl ethers such as diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether (butyl carbitol), and diethylene glycol dimethyl ether. The content of the water-miscible organic solvent is preferably 1 to 10% by mass relative to the total mass of the detergent composition.

[0085] [pH adjuster] Examples of pH adjusting agents include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide; basic amino acids such as arginine and lysine; ammonia; alkali metal carbonates such as sodium carbonate and potassium carbonate; alkanolamines such as monoethanolamine, diethanolamine, and triethanolamine; and acidifying agents such as sulfuric acid, hydrochloric acid, phosphoric acid, and p-toluenesulfonic acid. Among these, monoethanolamine and p-toluenesulfonic acid are preferred. pH adjusters may be used individually or in combination of two or more types. The amount of pH adjuster added should be appropriately set to the amount necessary to adjust the detergent composition to the desired pH. Furthermore, the total amount of components (A) to (D) and any optional components shall not exceed 100% by mass.

[0086] <Physical properties> The pH of the detergent composition is preferably 5.5 to 8.5 at 25°C, more preferably 5.7 to 8.3, and even more preferably 6.0 to 8.0. pH is a value measured using a pH meter (product name: HM-30G, manufactured by Toa DKK Co., Ltd.).

[0087] The viscosity of the detergent composition at 25°C, as measured with a B-type viscometer, is preferably 10 to 1,000 mPa·s, and more preferably 10 to 500 mPa·s. A viscosity within this range ensures good handling. Viscosity was measured using a Brookfield viscometer (Type B viscometer) with the rotor speed set to 60 rpm, after 60 seconds.

[0088] <Manufacturing method> The detergent composition of the present invention can be manufactured in accordance with conventionally known methods for manufacturing detergent compositions. For example, the detergent composition can be manufactured by dissolving component (A), component (B), component (C), and optionally an optional component in part of component (D), adjusting the pH with a pH adjusting agent as needed, and then adding the remaining component (D).

[0089] <How to use> Methods of using the detergent composition (i.e., methods for washing textile products) include, for example, putting the detergent composition into the detergent composition dispenser of a washing machine and then starting the washing machine; adding the detergent composition to the water together with the items to be washed during washing; immersing the items to be washed in a detergent solution prepared by dissolving the detergent composition in water beforehand; and applying the detergent composition directly to the items to be washed, leaving it for, for example, 3 minutes to 24 hours, and then performing a normal wash.

[0090] Furthermore, it is preferable to use a washing machine equipped with an automatic detergent dispenser, which has been put into practical use in recent years. The automatic detergent dispenser is a device that automatically dispenses the detergent composition from a tank containing the detergent composition into the washing tub via a filter for removing debris located at the bottom of the tank and a dispensing pipe. A measuring means such as a syringe pump is provided in the middle of the dispensing pipe, allowing a fixed amount set according to the amount of laundry, etc., to be transferred from the tank to the washing tub. Using an automatic detergent dispenser not only eliminates the hassle of measuring, but also prevents detergent from getting on your hands or spilling and staining the washing machine or surrounding area during the measuring process.

[0091] Furthermore, it is preferable to use an automatic dispenser that can automatically dispense a predetermined amount of liquid. Using an automatic dispenser is also preferable because it allows for accurate measurement of even small amounts of the cleaning agent composition, making it easier to achieve sufficient cleaning power and avoiding waste due to overuse. Some automatic dispensers utilize infrared sensors or similar technologies to dispense automatically without requiring the user to touch any switches. Using such an automatic dispenser allows users to measure out the cleaning agent composition simply by holding a container in one hand, significantly reducing the burden on the user.

[0092] When using an automatic dispenser, it is also preferable to receive the detergent composition dispensed into a flexible container and then place that flexible container directly into the washing machine. This ensures that the entire amount of the dispensed detergent composition is reliably dissolved in the washing solution. Examples of materials for flexible containers that can be directly put into a washing machine include silicone resin, polyvinyl chloride, elastomer, flexible polyester, flexible polypropylene, and polyurethane.

[0093] Examples of items to be washed include clothing, dishcloths, towels, sheets, curtains, and other textile products. The material of the textile products is not particularly limited and may be any of the following: natural fibers such as cotton, silk, and wool, or synthetic fibers such as polyester and polyamide.

[0094] When dissolving a detergent composition in water to make a cleaning solution, it is preferable to dilute it, for example, 5 to 6,000 times (by volume). The water ratio per item being washed (mass of washing solution / mass of items being washed) is preferably 5 or higher for drum-type washing machines and 10 or higher for top-loading washing machines.

[0095] The detergent composition of the present invention is suitable as a detergent for textile products, and more suitable as a detergent composition for clothing. Generally, detergent compositions for textile products are often used repeatedly on the same garments. Furthermore, the detergent composition of the present invention tends to exhibit superior cleaning power when dirt adheres to textile products that have already been washed using the detergent composition of the present invention. This is thought to be because components (B) and (C) of the detergent composition remain on textile products that have been washed using the detergent composition of the present invention. [Examples]

[0096] The present invention will be described in detail below with reference to examples, but the present invention is not limited to the following description.

[0097] <[Raw materials used> [(A1) component] ·A1-1: Polyoxyethylene alkyl (12-14 carbon atoms) ether (average number of moles of ethylene oxide added: 7), obtained by adding 7 moles of ethylene oxide to natural alcohol. In general formula (a1), R 1 R is one or more linear alkyl groups selected from C12 alkyl groups and C14 alkyl groups, 2 A is a hydrogen atom, 1 A compound in which O is an oxyethylene group, f1 is 7, g1 is 0, and h1 is 0. Synthesized by the following synthesis method.

[0098] (Method for synthesizing A1-1) 861.2 g of natural alcohol (Procter & Gamble, product name "CO-1214") and 2.0 g of a 30% by mass NaOH aqueous solution were charged into a pressure-resistant reaction vessel, and the inside of the reaction vessel was purged with nitrogen. Then, dehydration was carried out at a temperature of 100°C and a pressure of 2.0 kPa or less for 30 minutes, and the temperature was raised to 160°C. Next, while stirring the reaction mixture, 355.0 g of ethylene oxide (gaseous) was gradually added to the reaction mixture. At this time, the ethylene oxide was added using a blowpipe while adjusting the addition rate so that the reaction temperature did not exceed 180°C. After the addition of ethylene oxide was complete, the mixture was aged for 30 minutes at a temperature of 180°C and a pressure of 0.3 MPa or less, and then the unreacted ethylene oxide was removed by distillation at a temperature of 180°C and a pressure of 6.0 kPa or less for 10 minutes. Next, after cooling the temperature to below 100°C, 70% by mass p-toluenesulfonic acid was added to neutralize the 1% by mass aqueous solution of the reactants so that its pH became 7, thereby obtaining A1-1.

[0099] A1-2: Polyoxyethylene alkyl (12-14 carbon atoms) ether (average number of moles of ethylene oxide added: 15), obtained by adding 15 moles of ethylene oxide to natural alcohol. In general formula (a1), R 1 R is one or more linear alkyl groups selected from C12 alkyl groups and C14 alkyl groups, 2 A is a hydrogen atom, 1 A compound in which O is an oxyethylene group, f1 is 15, g1 is 0, and h1 is 0. Synthesized by the following synthesis method.

[0100] (Method for synthesizing A1-2) A1-2 was obtained using the same synthesis method as A1-1, except that the amount of ethylene oxide (gaseous) added was changed to 760.6 g.

[0101] [(A2) component] A2-1: Linear alkylbenzene sulfonic acid (LAS-H), manufactured by Lion Corporation, product name: Lypon (registered trademark) LH-200. A2-2: Polyoxyethylene alkyl ether sulfate (AES), with an average number of moles of ethylene oxide added of 1.0.

[0102] [(B) Component] B-1: Soil-release polymer, manufactured by Clariant GmbH, Germany, trade name "TexCare® SRN-170", weight-average molecular weight 3000, aggregate containing the polymer represented by the above formula (B-p1). B-2: Soil-release polymer, manufactured by Clariant GmbH, Germany, trade name "TexCare SRN-325". Weight-average molecular weight 7000, aggregate containing the polymer represented by the above formula (B-p1).

[0103] [(C) component] • C-1: Tetrasodium hydroxyiminodisuccinate (HIDS) (manufactured by Nippon Shokubai Co., Ltd., product name "Biodegradable Chelating Agent (HIDS®)"). C-2: Ethylenediamine disuccinate trisodium (EDDS) (manufactured by Kirest Co., Ltd., product name "Kirest EDDS(registered trademark)-35"). • C-3: 1,3-propanediaminetetraacetate (PDTA) (manufactured by Kirest Co., Ltd., trade name "Kirest® PD-4H"). C-4: Hydroxyethylethylenediaminetriacetate trisodium (HEDTA) (manufactured by Kirest Co., Ltd., product name "Kirest H"). C-5: 1,3-diamino-2-hydroxypropanetetraacetate (DPTA-OH) (manufactured by Kirest Co., Ltd., product name "Kirest RA"). • C-6: Triethylenetetraamine hexaacetate hexasodium (TTHA) (manufactured by Kirest Co., Ltd., product name "Kirest Q"). C-7: Sodium diethylenetriaminepentaacetate (DTPA) (manufactured by Kirest Co., Ltd., product name "Kirest P").

[0104] [(CX) component] Substitute for (C) component • C-8: Trisodium methylglycine diacetate (MGDA) (manufactured by BASF, trade name "Trilon® M Liquid JP"). C-9: Tetrapotassium ethylenediaminetetraacetate (EDTA) (manufactured by Kirest Co., Ltd., product name "Kirest 4K-50").

[0105] [(D) component] • Water: Ion-exchanged water.

[0106] [Optional ingredients] • Enzymes: Multi-enzyme (manufactured by Novozymes, product name "Medley® Core 210L"). • Ethanol: Manufactured by Nippon Alcohol Sales Co., Ltd., product name "Specific Alcohol 95% Synthetic". • PEG1000: Polyethylene glycol (manufactured by Junsei Chemical Co., Ltd., product name "PEG#1000", mass-average molecular weight = 1000). • Citric acid: Manufactured by Iwata Chemical Co., Ltd., product name "Anhydrous Citric Acid". • Dichrosan: 5-chloro-2-(4-chlorophenoxy)phenol (manufactured by BASF, trade name "TINOSAN® HP100"). Solfit: 3-Methoxy-3-methyl-1-butanol (manufactured by Kuraray Co., Ltd., product name "Solfit®"). • Coconut fatty acid: Manufactured by NOF Corporation, product name "Coconut Fatty Acid". • Fragrance: Fragrance composition A as described in Tables 11-18 of Japanese Patent Publication No. 2002-146399. Enzyme liquid preparation). • MEA: Monoethanolamine (manufactured by MIWON Chemical, product name "Monoethanolamine").

[0107] <Method for evaluating cleaning power> [Preparation of cleaning solution] To 900 mL of water (25°C, hardness 5°DH), each example's detergent composition was added to a concentration of 333 ppm, and the mixture was stirred for 30 seconds to obtain the detergent solution for each example.

[0108] [Preparation of unstained cloth] In a washing test chamber, the washing solution for each example, five pieces of polyester cloth cut to 5cm x 5cm, and the washed knitted cloth were placed and washed at 120 rpm and 25°C for 10 minutes, with a bath ratio of 20:1. Afterwards, the cloths were transferred to a twin-tub washing machine (Mitsubishi Electric, product name "CW-C30A1-H1"), rinsed in 30L of water (25°C, hardness 5°DH) for 3 minutes, spun dry for 1 minute, and then air-dried to prepare unstained cloths for each example.

[0109] [Preparation of soiled cloth before washing] For each of the five unstained cloths from each example, 100 μL of retort curry was added, and the cloths were air-dried overnight to prepare the soiled cloths before washing. House Foods' Curry-ya Curry Medium Hot was used as the retort curry.

[0110] [Preparation of soiled cloth after washing] The cleaning solution for each example, five soiled cloths before cleaning for each example, and the cleaned knitted cloth were placed in a cleaning tester, and the cloths were washed for 10 minutes at 120 rpm and 25°C with a bath ratio of 20:1. After that, the cloths were transferred to a twin-tub washing machine (Mitsubishi Electric, product name "CW-C30A1-H1"), rinsed in 30L of water (25°C, hardness 5°DH) for 3 minutes, spun dry for 1 minute, and then air-dried to prepare the soiled cloths after cleaning for each example.

[0111] [Calculation of cleaning rate] For each example, the reflectance of five unstained cloths and the soiled cloths before and after washing using those five unstained cloths was measured using a colorimeter (manufactured by Nippon Denshoku Industries Co., Ltd., product name "SE7700"). The washing rate (%) was calculated using the following formula (i), and the average value of the five cloths was determined. Cleaning rate (%) = (K / S of soiled cloth before cleaning - K / S of soiled cloth after cleaning) / (K / S of soiled cloth before cleaning - K / S of unsoiled cloth) × 100 ... (i) (In formula (i), K / S=(1-R / 100) 2 (2R / 100). R is reflectance (%).

[0112] [evaluation] For each example, the average cleaning rate (%) was used as an indicator, and the food stain removal power was evaluated based on the following criteria, with "◎" and "○" being considered passing grades. (Evaluation Criteria) ◎: The average cleaning rate is 60% or higher. ○: The average cleaning rate is between 55% and 60%. △: The average cleaning rate is between 50% and 55%. ×: The average cleaning rate is less than 50%.

[0113] <Examples, Comparative Examples> Each detergent composition for each example was prepared by adding each component to component (D) and mixing them according to the formulations shown in Tables 1-4. The ingredient amounts in the table are calculated on a pure content basis. Ingredients whose amounts are not listed in the table are not included. In the table, the "appropriate amount" for MEA content is the amount necessary to bring the detergent composition to the pH shown in the table. In the table, the "balance" for water composition is the amount necessary to make the entire detergent composition 100% by mass. The table shows the results of evaluating the cleaning power of each example of detergent composition.

[0114] [Table 1]

[0115] [Table 2]

[0116] [Table 3]

[0117] [Table 4]

[0118] As shown in Tables 1-3, Examples 1-23 received a "◎" or "○" rating for cleaning power. As shown in Table 4, Comparative Example 1, which lacked component (B), and Comparative Example 2, which lacked component (C), received a "×" rating for cleaning power. Comparative Examples 3 and 4, which used component (CX) instead of component (C), received a "△" rating for cleaning power. Comparative Examples 5 and 6, which contained a small amount of component (A1), received a "△" or "×" rating for cleaning power. Comparative Example 7, which lacked both component (B) and component (C), received a "△" rating for cleaning power despite using an enzyme. From the results above, it has been confirmed that applying the present invention demonstrates excellent cleaning power even against stubborn stains on food and beverages.

Claims

1. (A) Ingredients: Surfactant and (B) Component: A polymer having at least one repeating unit (b1) selected from the group consisting of alkylene terephthalate units and alkylene isophthalate units, and an oxyalkylene unit (b2), (C) Components: One or more chelating agents selected from hydroxyiminodisuccinic acid, ethylenediaminedisuccinic acid, 1,3-propanediaminetetraacetic acid, hydroxyethylethylenediaminetriacetic acid, 1,3-diamino-2-hydroxypropanetetraacetic acid, triethylenetetraaminehexaacetic acid, diethylenetriaminepentaacetic acid, and salts thereof, (D) Ingredients: Water and A liquid detergent composition for textile products containing, The aforementioned component (A) includes component (A1): a nonionic surfactant. The content of component (A1) is 5% by mass or more relative to the total mass of the liquid detergent composition for textile products. Liquid detergent composition for textile products.

2. The liquid detergent composition for textile products according to claim 1, wherein the mass ratio of the content of component (B) to the content of component (C) [(B) / (C) ratio] is 0.1 to 100.

Images